start.sh

#!/bin/bash

cd "$(dirname "$0")"

# Barebones start script
# exec java -Xms512M -Xmx1024M -XX:+UnlockExperimentalVMOptions -XX:+UseZGC -jar server.jar nogui
# exec java -server -Xms512M -Xmx1280M -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -jar server.jar nogui

# Automatically restart server after countdown
while true
do
  (
    # exec java -server -Xms1280M -Xmx1280M -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -jar server.jar nogui
    exec java -Xms6G -Xmx6G -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:InitiatingHeapOccupancyPercent=15 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1 -Dusing.aikars.flags=https://mcflags.emc.gs -Daikars.new.flags=true -jar server.jar nogui
  )

  countdown=10
  echo "Minecraft server will restart in $countdown seconds..."
  while [ $countdown -gt 0 ]
  do
    sleep 1
    countdown=$((countdown - 1))
    echo "$countdown"
  done

  echo "Restarting Minecraft server..."
done